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1.
为了支持并利用有机发光二极管(OLED)显示技术,设计了一种适用于96×64无源OLED(PM-OLED)的显示控制与驱动芯片。该芯片可以实现6.5万彩色显示和256级对比度调节,驱动方法采用了脉冲幅度调制(PAM)。芯片不但集成了数字和模拟电路,而且兼容高电压和低电压同时工作。测试结果表明:在低压电源为3V、高压电源为12V的情况下,当列驱动单元输出电流为100μA时,驱动电路和显示屏的整体模块功耗约为770mW,所设计的控制与驱动芯片能够正确显示彩色图像。  相似文献   

2.
王英志  韩太林  李洋  王冲 《科技信息》2012,(29):145-146
设计一种有机电致发光显示(OLED)的驱动控制电路,实现320×240×RGB像素点全彩色视频图像显示。本文采用AL320C视频解码与显示控制芯片,在获得视频信号的同时,还可以获得控制信号,简化了OLED显示屏的驱动控制难度。本设计电路简单、成本低,实验表明显示效果良好,为各种便携式系统显示前端的设计提供参考。  相似文献   

3.
有机电致发光二极管(OLED)作为新一代显示技术,将来极有可能取代LCD.OLED的驱动电路也成为研究热点.在已有有源阵列OLED(AM-OLED)驱动技术的基础上,提出一种结构较为简单的基于亚阈值技术的栅压控制OLED有源驱动电路,经过HSPICE仿真,该电路较好解决了工作于饱和区的有源驱动电路所引起的发光亮度非线性...  相似文献   

4.
Poly-Si TFT有源驱动OLED单元像素电路的参数设计   总被引:2,自引:0,他引:2  
根据有机电致发光显示器件(OLED)的发光特性及多晶硅 薄膜晶体管 (Poly-Si TFT)的工作特性, 对Poly-Si TFT有源驱动OLED的源极跟随型双管 单元像素驱动电路进行了理论计算和模拟仿真, 确定了单元像素中的各种器件参数; 通过AI M-Spice的模拟仿真了整个像素电路工作状态, 对器件参数进行了优化.  相似文献   

5.
探讨了电子科技大学显示器件驱动技术课程的全彩OLED显示模块的应用实验。实验系统以51系列单片机为核心,通过接口电路控制OLED显示模块,达到显示目的。通过实验可使学生掌握SSD1338的应用电路,提高驱动程序设计能力。  相似文献   

6.
基于南科(ACSMC)3 um铝栅N阱CMOS工艺,讨论了一款集成了TN-LCD驱动电路的消费类电子芯片,它的工作电压为1.5 V。文章详细介绍了LCD背电极驱动电路的设计,该驱动电路采用1/2 Duty、1/2Bias的驱动方式,具有电路结构简单、显示质量高和对比度高等优点;实测结果和Hspice仿真结果均满足设计要求。  相似文献   

7.
FPGA实现全彩色OLED动态视频显示控制   总被引:5,自引:0,他引:5  
在分析有机电致发光显示器(OLED)显示方法和灰度实现方式的基础上提出了基于四分场的数字灰度方案.介绍了如何采用FPGA实现OLED视频显示控制电路的方法,分析了电路中各个模块的作用及整个电路的工作过程,并给出了仿真和电路测试结果.采用无间隔显示法实现16级灰度显示,使用FPGA由硬件描述语言(VerilogHDL)设计了控制电路,从DVI接口获取动态图像,并将LCD的驱动IC用于驱动AM-OLED,最后成功获得了能实时动态显示的5.1cm(2英寸)120×(160×3)全彩色AM-DLED显示屏显示,图像质量较好.  相似文献   

8.
以光电双基区晶体管为驱动器,设计了一种有机电致发光显示器(OLED)双稳态驱动电路的方案,通过实验得出了输入光功率和输出光功率的光学双稳态的特性曲线,并对该双稳态电路在OLED驱动的应用上进行了分析.  相似文献   

9.
为解决采用丝网印刷技术制作的碳纳米管显示器件(CNT-FED)驱动电压高、亮度均匀性差的问题,设计并实现了电压控制的寻址与显示分离型的驱动电路.采用分离高压控制器件实现了行、列驱动电压波形,并利用反向高压控制暗像素点,不仅能满足丝网印刷CNT-FED 700~1 000 V的高压驱动要求,并且有效抑制了漏电流导致的串亮现象.在各行电路上设计了限流电阻,对场发射电流起到反馈作用,有效改善了亮度均匀性.该驱动电路成本低,且从电路角度提升了丝网印刷CNT-FED的亮度和发光均匀性.测试结果表明:由新电路驱动的CNT-FED可实现动画显示,峰值亮度可达到1 400 cd/m2.  相似文献   

10.
为实现人体血氧的实时便携性监测,设计研究了一种新型便携式低功耗血氧检测装置。STM32单片机为主控芯片及数据处理单元,MAX30101血氧传感芯片为数据采集传感芯片。STM32单片机通过软件编程控制MAX30101传感器、OLED显示电路、蓝牙传输电路以及USB调试电路,对人体血氧浓度进行实时动态监测。实验样机测试结果表明,该设计具有良好的准确性及稳定性,为智能移动医疗领域提供了一种血氧检测的新思路。  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

13.
There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.  相似文献   

14.
王慧 《科技信息》2008,(10):240-240
Wuthering Heights, Emily Bronte's only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.  相似文献   

15.
The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.  相似文献   

16.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

17.
The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3~4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰~ -7.8‰, PDB) and matrix dolomites (-6.6‰~ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084~0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078~0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.  相似文献   

18.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

19.
In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.  相似文献   

20.
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